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    Mass loaded earbud with vent chamber
    64.
    发明授权
    Mass loaded earbud with vent chamber 有权

    公开(公告)号：US11575985B2

    公开(公告)日：2023-02-07

    申请号：US17002619

    申请日：2020-08-25

    Applicant: Apple Inc.

    Inventor： Yacine Azmi ,  Esge B. Andersen ,  Jonathan S. Aase ,  Michael B. Howes

    IPC: H04R1/10 ,  H04R1/28

    Abstract: Intra-concha earphones are disclosed. In an embodiment, an intra-concha earphone includes a housing having a rear space divided into a back volume, a bass duct, and a vent chamber between a driver and a rear wall. The vent chamber may be acoustically coupled with the back volume through both an acoustic port and the bass duct. Furthermore, the vent chamber may be acoustically coupled with a surrounding environment through a vent port, which may be a sole acoustic opening in the rear wall. Thus, sound emitted by the driver may propagate through the acoustic port and the bass duct to meet in the vent chamber before being discharged through the vent port to the surrounding environment. Other embodiments are also described and claimed.

    Audio signal processing for sound compensation
    65.
    发明授权
    Audio signal processing for sound compensation 有权

    公开(公告)号：US11368776B1

    公开(公告)日：2022-06-21

    申请号：US16875584

    申请日：2020-05-15

    Applicant: Apple Inc.

    Inventor： John Woodruff ,  Jing Xia ,  Yacine Azmi

    IPC: H04R1/10 ,  H03G3/30 ,  G06F3/16

    Abstract: Signal energy in auditory sub-bands of an input audio signal is determined. Sound pressure level, SPL, in those sub-bands is then determined, based on the signal energy and based on sound output sensitivity of the against-the-ear audio device. In one instance, at least first and second gain lookup tables are determined based on a hearing profile of a user of the against-the-ear audio device. Sub-band gains that are to be applied to the input audio signal are determined based on the determined SPL. When the input audio signal is for example telephony the sub-band gains are computed using the first gain lookup table, and when the input audio signal is for example media the sub-band gains are computed using the second gain lookup table. Other aspects are also described and claimed.

    EARPHONE HAVING A CONTROLLED ACOUSTIC LEAK PORT
    68.
    发明申请
    EARPHONE HAVING A CONTROLLED ACOUSTIC LEAK PORT 审中-公开

    公开(公告)号：US20190200117A1

    公开(公告)日：2019-06-27

    申请号：US16286346

    申请日：2019-02-26

    Applicant: Apple Inc.

    Inventor： Michael B. Howes ,  Yacine Azmi ,  Scott P. Porter ,  Jonathan S. Aase ,  Andrew P. Bright ,  Christopher R. Wilk

    IPC: H04R1/28 ,  H04R1/10 ,  H04R1/02

    Abstract: An earphone comprising an earphone housing having a wall comprising (1) a front side that joins (2) an end portion in which a primary sound output opening is formed, which joins (3) a face portion in which a secondary output opening is formed, which joins (4) a back side which joins the front side and encloses a driver, wherein the primary output opening is dimensioned to output sound generated by a diaphragm of the driver contained within the earphone housing into the ear and the secondary output opening is dimensioned to vent the ear to a surrounding environment, and wherein the primary output opening and the secondary output opening face different directions.

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